Method of craping paper.



A. & J. FUNKE. METHOD OF GRAPING PAPER. APPLICATION FILED JULY 13, 1909.

962,505, Patented June 28, 1910.

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ANTON FUNKE AND JOSE]? FUNKE, OF NEW YORKQN. Y., ASSIGNORS TO THEPAPYRUS ARTIFICIAL PAPER MANUFACTURING COMPANY, OF HOBOKEN, NEW JERSEY.

METHOD on cnnrme rerun.

Specification of Letters Patent.

Patented die 28, 19141 Application filed July 13, 1909. Serial No.507,327.

- Improvements in Methods-of Qraping Paper, of which the following is aspecification. The present invention pertains to a method of crapingpaper.

The simple or weak craping of paper is well known and its methodconsists in that the Wet paper pulp sheet is conveyed over the heateddrying cylinder and crimpled on said cylinder and removed therefrom bymeans of a scraper. A more abundant or strong craping particularly withthick so-called water-proof paper has hitherto been extremely diflicultas it requires a special treatment of the paper material and theestablishment of a peculiar relation between the degree of humidity ofthe paper pulp sheet on one hand and the temperature of the dryingcylinder on the other hand, which relation has to be speciallydetermined for each case.

The present invention has for its object to obviate all suchdifliculties, and is based on the principle that the craping of paper isthe more abundant, the stronger can be the action of the scraper, e.,the more intimately the smooth paper pulp sheet adheres to the dryingcylinder.

Our method of craping may be applied either in the process ofmanufacturing the paper or after the paper is ready.

Our method consists in applying an adhesive substance as for instance, adextrin solution or the like between the paper sheet and the dryingcylinder and immediately before the paper sheet passes into the heatedcylinder thereby causing the paper sheet to intimately adhere to thesurface ofthe drying cylinder. The application of the adhesive substancemay be effected by causing the same sprayed in a suitable manner bothonto the surface of the paper sheet directed toward the cylinder andonto the surface of the latter or upon either of these surfaces. Thescraper in acting against the revolving cylinder will then abundantlycrimple the paper and cause its detachment from the cylinder.

The adhesive substance may have added to it a suitable liquid as sugarwater, glycerin, starch or the like in order to impart to the papercoloring effects, brilliancy paper, as the case may be. To make thepaper adhere more strongly to the cylinder, the former may in additionbe specially pressed to the cylinder.

To make our invention more clear the same is illustrated in theaccompanying denote corresponding parts.

a denotes the heated drying cylinder or the cylinder on which the paperis craped and b the scraper.

0 denotes the paper sheet to be craped. In casethe craping is to becarried out during the process of manufacturing the paper 0 would be thepaper pulp sheet which in (rder to be dried is conveyed over the cylinera.

At d in any suitable manner as for instance by means of a sprayer or thelike adhesive substance is caused to be sprayed both onto the surface ofthe paper directed toward the cylinder and the latter, or onto either ofthem so that in course of rotation united with the cylinder. The scraperb in acting against the cylinder crimples the paper and detaches it fromthe cylinder.

What we claim and desire to secure by Letters Patent isp a revolvingcylinder, causmg an adhesive substance being applied between the sur=faces of the paper and before the passage of the former onto the latterand in causing the paper being crimpled during its detachment from thecylinder. I

In testimony whereof we afix our signatures in presence of twowitnesses.

. ANTON FUNKE. JOSEF FUNm.

Witnesses ELLIS V. LEVY, MA: D. ()RDMANN.

or to maintain the softness or stifiness of the drawing in which similarreference letters of the cylinder the paper becomes intimately I Amethod of craping or corrugating paconsisting in conveying the paperover cylinder immediately

